BJU international · 1999
The growth of the testes during the fetal period.
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Malas M A, Sulak O, Oztürk A
Аннотация
OBJECTIVE: To determine the size and position of the fetal testes during gestation.
MATERIALS AND METHODS: The study comprised 48 testes obtained from 24 human fetuses with no congenital abnormalities, aged 14-40 weeks. The development of the fetuses was evaluated by measuring the crown-rump length. Testicular size was assessed as the height, width, thickness and weight, and the position of testes determined during fetal development.
RESULTS: The testes in 11 fetuses (22 testes) aged 14-37 weeks were in the abdominal cavity; no testis had descended to the scrotum in any fetus until 27 weeks of gestation. Both testes had descended to the scrotum only in fetuses aged 33-40 weeks. There was no significant difference between right and left testicular size in 13 fetuses (26 testes) aged 27-40 weeks, but size correlated with gestational age (P<0.001).
CONCLUSION: All testes had descended to the scrotum by 33 weeks of gestation, but there was considerable variation in position from 27 weeks.
MATERIALS AND METHODS: The study comprised 48 testes obtained from 24 human fetuses with no congenital abnormalities, aged 14-40 weeks. The development of the fetuses was evaluated by measuring the crown-rump length. Testicular size was assessed as the height, width, thickness and weight, and the position of testes determined during fetal development.
RESULTS: The testes in 11 fetuses (22 testes) aged 14-37 weeks were in the abdominal cavity; no testis had descended to the scrotum in any fetus until 27 weeks of gestation. Both testes had descended to the scrotum only in fetuses aged 33-40 weeks. There was no significant difference between right and left testicular size in 13 fetuses (26 testes) aged 27-40 weeks, but size correlated with gestational age (P<0.001).
CONCLUSION: All testes had descended to the scrotum by 33 weeks of gestation, but there was considerable variation in position from 27 weeks.